these 2 derivations will be built:
  /nix/store/qvm9ykrpkiiwdxlq0138bc3mzn0bq0by-nix-grpc-store-0.2.2.drv
  /nix/store/30acls5m6vrslrf8cdn9g4skkxl2i6hx-nix-grpc-store-exit-stress.drv